Actually the HS 805 is a fine headset - it doesn't get much press because it's not as sexy as an 820 or 850. The 805 is basic and is powered by a AAA battery.
Downside you have to replace the battery - upside you never have to charge it and you get 20 hours of talk time! The fidelity is good not great - certainly on par with a BT250. http://store.bizshopr.com/moths805.html